Search found 24 matches
- Sun Mar 22, 2015 12:57 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Re: Stirling engine with rhombic drive 75 ccm
Hi, in his book A. Ross writes on several places 230 W at 2,7 bar for this engine and also in third party literature I found this value. And you are right with the Beale number, thats why they are called the benchmark engines. But when I look at the effort they made in research and development in th...
- Sun Mar 22, 2015 11:51 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Re: Stirling engine with rhombic drive 75 ccm
Hi Aviator, the engine of Andy Ross you mentioned delivers 230 W with 2,7 bar pressure, which ends up in a Beale number of normal range. Comprehensive explanation of the Beale number you will find in older literature e.g. I have the book of Colin West "Principles and Applications of Stirling En...
- Sat Mar 21, 2015 12:55 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Re: Stirling engine with rhombic drive 75 ccm
Hi Aviator, on which calculations is your statement based? When I use the basic Beale equation just to estimate the power output of a carefully designed engine : P = Bn*Pm*f*V0 where Bn = Beale number = 0,15 for a professional designed Stirling (average of commercial engines) , a high Temperature di...
- Fri Mar 20, 2015 12:46 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Heat exchanger design with FastTrack, FlexiScale and ReScale
- Replies: 1
- Views: 3588
Heat exchanger design with FastTrack, FlexiScale and ReScale
Hi all, for my Stirling engine new heat exchangers are in the planning stage using FastTrack, FlexiScale and ReScale by Dr. A. Organ for a target power of several hundred Watts. If anybody is familar with the scaling methods of Dr. A. Organ I would be very thankful if u contact me here or via e-mail...
- Fri Mar 20, 2015 12:37 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Re: Stirling engine with rhombic drive 75 ccm
Hi,
power is much increased and an Arduino is added to measure engine data.
I added a new video with many updates at this link:
https://youtu.be/k3XNxzmMoWI
Ralf
power is much increased and an Arduino is added to measure engine data.
I added a new video with many updates at this link:
https://youtu.be/k3XNxzmMoWI
Ralf
- Sat Mar 08, 2014 3:14 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Re: Stirling engine with rhombic drive 75 ccm
Hi all, many thanks for your kind comments, there are a lot of interesting ideas and suggestions. I will try pressurising the engine as soon as I improved the other obviously weak points friction, compression and regenerator. The engine is prepared for pressurization up to ten bar, just the seals ar...
- Fri Mar 07, 2014 2:03 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Re: Stirling engine with rhombic drive 75 ccm
Hi Ian, I use piston rings because the engine is completely dry-running and for a long-lasting performance this seems for me to be the only way. I tried a solid graphit piston which sealed beautifully perfect but friction was to high and without doubt it wouldnt´t stand longer then 100 hours. Pressu...
- Thu Mar 06, 2014 3:20 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Stirling engine with rhombic drive 75 ccm
- Replies: 28
- Views: 22656
Stirling engine with rhombic drive 75 ccm
Hi all, after reading a lot in this beautiful Stirling forum I want to show you my own work on the topic. Its a 75 ccm Rhombic Stirling with finned heat exchangers and regenerator, completely dry-running. Still unpressurized because a lot things have to be improved before. The main challenge at this...
- Tue Feb 25, 2014 2:17 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: New Members PLEASE read! - OR, having problems registering, being deactivated
- Replies: 511
- Views: 493274
Re: "Hi" We are new here!
Hi,
thanks for letting me be a member of this forum.
Ralf
thanks for letting me be a member of this forum.
Ralf